From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20/5.0
Date: Mon, 24 Jun 2019 02:18:44 +0000 [thread overview]
Message-ID: <bug-201539-2300-lmXKACcteG@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-201539-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=201539
--- Comment #19 from Sean Birkholz (supasean@hotmail.com) ---
I've done a bit of digging and I've managed to get a proper hysteresis value to
appear in a 5.1.14 kernel built from source.
I now have this output from sensors:
amdgpu-pci-0100
Adapter: PCI adapter
vddgfx: +1.00 V
fan1: N/A (min = 0 RPM, max = 0 RPM)
temp1: +66.0°C (crit = +104000.0°C, hyst = +90.0°C)
power1: 29.02 W (cap = 208.00 W)
I don't know why proper values are not set automatically because I've found the
correct values in tons of source files but none of the #defines appear to be
used? And much of the source doesn't appear to differ between 5.1.14 and
4.18.x
I modified (kernel src)/drivers/gpu/drm/amd/powerplay/inc/pp_thermal.h and
changed the values of -273150 to 90000. This corrects the hysteresis value but
I'm still searching for where the critical temp value is actually set.
I *think* fixing these values may fix the fan problem because why would a fan
spin up if its nowhere near the critical or hysteresis values? No need.
Except when the critical value is 19x the temp of the sun, the card gets so hot
it protects itself by maxing the fans for a short burst. That is my theory
anyway, hope to be able to test it soon but no promises.
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next prev parent reply other threads:[~2019-06-24 2:18 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-27 12:32 [Bug 201539] New: AMDGPU R9 390 automatic fan speed control in Linux 4.19 bugzilla-daemon
2018-10-27 12:34 ` [Bug 201539] " bugzilla-daemon
2018-10-27 12:35 ` bugzilla-daemon
2018-10-27 12:45 ` bugzilla-daemon
2018-12-08 7:59 ` bugzilla-daemon
2018-12-21 1:30 ` bugzilla-daemon
2018-12-21 2:16 ` bugzilla-daemon
2018-12-21 15:06 ` bugzilla-daemon
2018-12-21 15:56 ` bugzilla-daemon
2018-12-24 11:55 ` [Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20 bugzilla-daemon
2018-12-24 11:55 ` bugzilla-daemon
2018-12-31 9:06 ` bugzilla-daemon
2019-01-05 13:41 ` bugzilla-daemon
2019-03-04 2:17 ` [Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20/5.0 bugzilla-daemon
2019-03-09 2:44 ` bugzilla-daemon
2019-04-17 10:37 ` bugzilla-daemon
2019-06-06 11:18 ` bugzilla-daemon
2019-06-06 11:44 ` bugzilla-daemon
2019-06-06 12:18 ` bugzilla-daemon
2019-06-07 1:41 ` bugzilla-daemon
2019-06-18 17:42 ` bugzilla-daemon
2019-06-24 2:18 ` bugzilla-daemon [this message]
2019-10-05 13:19 ` bugzilla-daemon
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2020-12-02 16:21 ` bugzilla-daemon
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2020-12-13 23:56 ` bugzilla-daemon
2020-12-14 23:05 ` bugzilla-daemon
2020-12-14 23:26 ` bugzilla-daemon
2020-12-14 23:44 ` bugzilla-daemon
2021-02-06 5:34 ` bugzilla-daemon
2022-02-05 21:59 ` bugzilla-daemon
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